The Upload: Your tech news briefing for Tuesday, May 5

It’s finally time for the changing of the guard at Cisco, after many months of rumors that John Chambers, CEO for 20 years, was planning his retirement. His surprise replacement is senior VP of worldwide operations Chuck Robbins, who wasn’t highlighted in a succession plan a few years ago. Chambers will move into the role of executive chairman on July 26 when Robbins takes over.